mirror of https://github.com/harness/drone.git
78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
// Copyright 2023 Harness, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package gitrpc
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import (
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"context"
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"io"
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"github.com/harness/gitness/gitrpc/internal/streamio"
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"github.com/harness/gitness/gitrpc/rpc"
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)
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type GetBlobParams struct {
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ReadParams
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SHA string
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SizeLimit int64
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}
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type GetBlobOutput struct {
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SHA string
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// Size is the actual size of the blob.
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Size int64
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// ContentSize is the total number of bytes returned by the Content Reader.
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ContentSize int64
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// Content contains the (partial) content of the blob.
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Content io.Reader
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}
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func (c *Client) GetBlob(ctx context.Context, params *GetBlobParams) (*GetBlobOutput, error) {
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if params == nil {
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return nil, ErrNoParamsProvided
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}
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stream, err := c.repoService.GetBlob(ctx, &rpc.GetBlobRequest{
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Base: mapToRPCReadRequest(params.ReadParams),
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Sha: params.SHA,
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SizeLimit: params.SizeLimit,
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})
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if err != nil {
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return nil, processRPCErrorf(err, "failed to start blob stream")
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}
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msg, err := stream.Recv()
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if err != nil {
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return nil, processRPCErrorf(err, "failed to read blob header from stream")
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}
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header := msg.GetHeader()
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if header == nil {
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return nil, Errorf(StatusInternal, "expected to receive header from server")
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}
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// setup contentReader that reads content from grpc stream
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contentReader := streamio.NewReader(func() ([]byte, error) {
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resp, rErr := stream.Recv()
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return resp.GetContent(), rErr
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})
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return &GetBlobOutput{
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SHA: header.GetSha(),
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Size: header.GetSize(),
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ContentSize: header.GetContentSize(),
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Content: contentReader,
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}, nil
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}
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